<html>
<head>
</head>
<body>
    <h3>上传数据文件至服务器</h3>
    <form action="/flaskUpload" method="POST" enctype="multipart/form-data">
      <input type="file" name="file"  />
      <input type="submit" value="上传" />
    </form>
    {{tip}}
    <p>服务器本地的数据文件：</p>
    <form action="/flaskDel" method="post">
    <ul>
      {% for file in files %}
      <li>
        <input type="checkbox" name="{{file}}" />{{file}} 
      </li>
      {% endfor %}
      <input type="submit" value="删除所选文件"/>
    </ul>
    </form>
</body>
</html>